pebbleagent/start_backend.sh at main · 5235aa-web/pebbleagent · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
#!/usr/bin/env bash
# macOS / Linux counterpart of start_backend.bat.
# Starts the gateway on ws://127.0.0.1:19876, waits until the port answers,
# then holds the terminal until a key is pressed and shuts the backend down.
set -u

cd "$(dirname "$0")" || exit 1

PORT=19876
PY=""
BACKEND_PID=""

port_open() {
    "$PY" - "$PORT" <<'PYEOF'
import socket, sys
sock = socket.socket()
sock.settimeout(0.5)
try:
    sock.connect(("127.0.0.1", int(sys.argv[1])))
except OSError:
    sys.exit(1)
finally:
    sock.close()
sys.exit(0)
PYEOF
}

cleanup() {
    if [ -n "$BACKEND_PID" ] && kill -0 "$BACKEND_PID" 2>/dev/null; then
        echo "Stopping backend..."
        kill "$BACKEND_PID" 2>/dev/null
        for _ in $(seq 1 20); do
            kill -0 "$BACKEND_PID" 2>/dev/null || break
            sleep 0.3
        done
        kill -9 "$BACKEND_PID" 2>/dev/null
        wait "$BACKEND_PID" 2>/dev/null
    fi
    BACKEND_PID=""
}
trap cleanup EXIT INT TERM

echo "========================================"
echo "  PebbleAgent Backend - starting..."
echo "========================================"
echo

echo "[1/3] Checking environment..."
for candidate in python3 python; do
    if command -v "$candidate" >/dev/null 2>&1; then
        PY="$candidate"
        break
    fi
done
if [ -z "$PY" ]; then
    echo "  [ERROR] python3 was not found in PATH."
    echo "  Install Python 3.11+ and make sure it is on PATH."
    exit 1
fi

if ! "$PY" -c "import websockets, openai, httpx, yaml" >/dev/null 2>&1; then
    echo "  [ERROR] Python dependencies are not installed."
    echo "  Run from the project root:"
    echo "    $PY -m pip install -r requirements.txt"
    exit 1
fi

echo "  OK - environment ready ($PY)"
echo

echo "[2/3] Cleaning up stale processes..."
if command -v lsof >/dev/null 2>&1; then
    STALE="$(lsof -ti "tcp:$PORT" 2>/dev/null)"
    if [ -n "$STALE" ]; then
        echo "      found PID=$STALE, terminating..."
        # shellcheck disable=SC2086
        kill $STALE 2>/dev/null
        sleep 1
        STALE="$(lsof -ti "tcp:$PORT" 2>/dev/null)"
        if [ -n "$STALE" ]; then
            # shellcheck disable=SC2086
            kill -9 $STALE 2>/dev/null
        fi
    fi
else
    echo "      lsof unavailable, skipping (a stale listener would fail to bind)"
fi
sleep 1

echo "[3/3] Starting backend..."
"$PY" run_backend.py &
BACKEND_PID=$!

echo "      waiting for ws://127.0.0.1:$PORT ..."
READY=0
for _ in $(seq 1 60); do
    if ! kill -0 "$BACKEND_PID" 2>/dev/null; then
        echo
        echo "  [ERROR] backend exited before the port opened."
        BACKEND_PID=""
        exit 1
    fi
    if port_open; then
        READY=1
        break
    fi
    sleep 1
done

if [ "$READY" -ne 1 ]; then
    echo
    echo "  [ERROR] the port did not open within 60s."
    exit 1
fi

echo
echo "========================================"
echo "  Backend is ready"
echo "  ws://127.0.0.1:$PORT"
echo
echo "  Press any key to stop the backend"
echo "========================================"
echo

# One key, no Enter: mirrors the `pause` in the batch file.
if [ -t 0 ]; then
    read -r -n 1 -s _ || true
else
    read -r _ || true
fi
echo